control debate, just a day after we showed you this scene in los angeles. People lining up in their cars to participate in a one-day gun buy-back program. That etch fort brought in more than 2,000 firearms in exchange for gift certificates. But barely two weeks after the newtown, connecticut, school shootings, another debate heating up about whether to bring guns into schools. A new poll suggests 64% of americans think arming at least one school official would be at least some what effective. But what about arming the teachers? Abc's cecilia vega tonight with some of those teachers who say yes. Okay, so, now what do I do? Reporter: The gun is fake, but these utah teachers fear the threat facing their classrooms is very real. Today, 200 of those teachers became students -- ready to fire. Reporter: Packing a conference room on their holiday break to learn how to carry a concealed weapon on the job. And how to protect their schools from an armed intruder. The safety is the biggest part. And to be able to use them appropriately is really quite a high priority for me. Reporter: Utah is one of few states where public schools allow guns on campus. But in the wake of the shooting at sandy hook, the push is on to add more states to that list. Arizona's attorney general wants every school principal or the principal's designee armed. Ohio, applications at one shooting course for teachers are up 20%. Some gun advocates say arming teachers is a lot like arming airline pilots, simply knowing that someone on campus might be carrying a gun could be enough to stop the bad guys. In 1997, an armed high school vice principal in mississippi did manage to stop a 16-year-old shooter on a rampage. But there was also columbine. 15 people died and the armed security officer on campus and another one nearby could not stop it. The nra's blanket call to arm our schools is really nothing more than a distraction. Reporter: Some teachers in utah say they want more gun training. And organizers are already plank another class for the next holiday break. I can go up and over. Reporter: Cecilia vega, abc news, los angeles.

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